Placards, Quantity, and the 1,001-Pound Line
You are loading a straight truck for a multi-stop run. Stop one: 600 lbs of a Table 2 flammable liquid (Class 3, PG II). Stop two: 500 lbs of a different Table 2 flammable liquid (Class 3, PG III). Stop three: 200 lbs of a Table 1 oxidizer (Class 5.1, PG I). The dock supervisor says 'it's all flammable, just put FLAMMABLE placards on and go - the oxidizer is small.' You have placards for FLAMMABLE and OXIDIZER on the truck. The total run is 120 miles, all intrastate.
1. Which placards are required on this vehicle, and why?
Read the worked answer
You need FLAMMABLE and OXIDIZER. The two Class 3 liquids are both Table 2 materials, and their aggregate is 600 + 500 = 1,100 lbs, which exceeds the 1,001-lb threshold, so FLAMMABLE placards are required for the Class 3 material. Separately, the 200 lbs of Class 5.1 PG I is a Table 1 material; Table 1 materials require placarding at any quantity - there is no 1,001-lb floor for them. So the oxidizer must be placarded even though it is 'small.' The supervisor's 'it's all flammable' reasoning collapses both the Table 1/Table 2 distinction and the aggregate-quantity rule.
2. The supervisor wants to skip the oxidizer placard to save time. What is your response, and what is the consequence of getting this wrong?
Read the worked answer
Refuse to skip it. Placarding is not discretionary and not a time-saving lever. An unplacarded Table 1 oxidizer is a serious violation and, worse, tells a firefighter at a crash that there is no oxidizer on board - oxidizers feed fire and change the suppression strategy. The consequence of getting it wrong is both a citation and a real risk to responders and you. Placard the vehicle to match what is actually loaded: FLAMMABLE (for the aggregate Class 3 over 1,001 lbs) and OXIDIZER (for the Table 1 material at any quantity). If you don't have the right placards, you don't move.
3. Does the intrastate, 120-mile nature of the run change any of this?
Read the worked answer
No. The placarding thresholds and Table 1 rules apply to the material and quantity on the vehicle, not to whether the trip crosses a state line or how short it is. A 120-mile intrastate run is still a highway shipment subject to the placarding requirements. The only things that would change the analysis are the actual class/quantity on board or a specific regulatory exception - not distance or intrastate status. Don't let 'it's a short local run' become a reason to under-placard.